Update 090._subsets_ii.md

090._subsets_ii.md

-###90. Subsets II
+### 90. Subsets II
 
 题目： 
 <https://leetcode.com/problems/subsets-ii/>
@@ -9,6 +9,7 @@
 
 思路：
 
+
 参考别人的
 
 现在来观察规律，与之前有不同之处是我们需要一个位置来mark，因为不再需要往之前出现过的地方再加了，看这个:
@@ -25,9 +26,27 @@
 
 
 
+```python
+class Solution(object):
+    def subsetsWithDup(self, nums):
+        """
+        :type nums: List[int]
+        :rtype: List[List[int]]
+        """
+        nums.sort()
+        results = [[]]
+        for i in range(len(nums)):
+            if any(nums[i] in result for result in results):
+                results.extend([result + [nums[i]] for result in results if result.count(nums[i]) == i - nums.index(nums[i])])
+            else:
+                results.extend([result + [nums[i]] for result in results])
+        return results
+        
+```
 
 
-```
+
+```python
 class Solution(object):
     def subsetsWithDup(self, nums):
         """
@@ -44,4 +63,5 @@ class Solution(object):
         		result.append(result[j] + [nums[i]])
         return result
         
-```
\ No newline at end of file
+```
+